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Cilazapril and dietary gamma-linolenic acid prevent the deficit in sciatic nerve conduction velocity in the streptozotocin diabetic rat.
J Diabetes Complications 1998 Mar-Apr; 12(2):65-73JD

Abstract

Young adult male Hooded Wistar rats were rendered diabetic by administration of streptozotocin and maintained for 5 weeks on a diet containing either 6% olive oil as the total source of fat (OO diet), or purified gamma-linolenic acid (GLA) at a concentration of 0.5% with the remaining 5.5% provided by olive oil (GLA diet). Rats were treated with the angiotensin converting inhibitor, cilazapril, administered in the drinking water at a dose of 20 mg kg-1 body weight day-1. For the OO diet groups, sciatic nerve conduction velocity (NCV) in diabetic rats was reduced by 32% (p < 0.01) in comparison with nondiabetic (vehicle-treated) rats and 27.5% (p < 0.05) in comparison with diabetic rats treated with cilazapril. Diabetic, cilazapril-treated rats showed no reduction in NCV. For the nondiabetic, diabetic, and diabetic plus cilazapril groups fed GLA, the NCV was not significantly different, indicating that dietary GLA also prevented the deficit in the NCV induced by the diabetic state. Analysis of the sciatic nerve endoneurial phospholipid fatty acids revealed a significant reduction in the proportion of GLA and an elevation in the proportion of linoleic acid in the diabetic groups compared with the nondiabetic groups and this was independent of the cilazapril treatment or the dietary lipid supplement. Sciatic nerve myo-inositol content was unaltered while mannose, fructose, glucose, and sorbitol levels were elevated in the diabetic groups and these changes were independent of the cilazapril treatment or the dietary lipid supplement. These results indicate that in the rat, cilazapril treatment or dietary GLA, at the doses tested, are effective in preventing the deficit in the NCV induced by diabetes.

Authors+Show Affiliations

CSIRO, Division of Human Nutrition, Adelaide, Australia.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

9559483

Citation

Burnard, S L., et al. "Cilazapril and Dietary Gamma-linolenic Acid Prevent the Deficit in Sciatic Nerve Conduction Velocity in the Streptozotocin Diabetic Rat." Journal of Diabetes and Its Complications, vol. 12, no. 2, 1998, pp. 65-73.
Burnard SL, McMurchie EJ, Leifert WR, et al. Cilazapril and dietary gamma-linolenic acid prevent the deficit in sciatic nerve conduction velocity in the streptozotocin diabetic rat. J Diabetes Complicat. 1998;12(2):65-73.
Burnard, S. L., McMurchie, E. J., Leifert, W. R., Patten, G. S., Muggli, R., Raederstorff, D., & Head, R. J. (1998). Cilazapril and dietary gamma-linolenic acid prevent the deficit in sciatic nerve conduction velocity in the streptozotocin diabetic rat. Journal of Diabetes and Its Complications, 12(2), pp. 65-73.
Burnard SL, et al. Cilazapril and Dietary Gamma-linolenic Acid Prevent the Deficit in Sciatic Nerve Conduction Velocity in the Streptozotocin Diabetic Rat. J Diabetes Complicat. 1998;12(2):65-73. PubMed PMID: 9559483.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cilazapril and dietary gamma-linolenic acid prevent the deficit in sciatic nerve conduction velocity in the streptozotocin diabetic rat. AU - Burnard,S L, AU - McMurchie,E J, AU - Leifert,W R, AU - Patten,G S, AU - Muggli,R, AU - Raederstorff,D, AU - Head,R J, PY - 1998/4/29/pubmed PY - 1998/4/29/medline PY - 1998/4/29/entrez SP - 65 EP - 73 JF - Journal of diabetes and its complications JO - J. Diabetes Complicat. VL - 12 IS - 2 N2 - Young adult male Hooded Wistar rats were rendered diabetic by administration of streptozotocin and maintained for 5 weeks on a diet containing either 6% olive oil as the total source of fat (OO diet), or purified gamma-linolenic acid (GLA) at a concentration of 0.5% with the remaining 5.5% provided by olive oil (GLA diet). Rats were treated with the angiotensin converting inhibitor, cilazapril, administered in the drinking water at a dose of 20 mg kg-1 body weight day-1. For the OO diet groups, sciatic nerve conduction velocity (NCV) in diabetic rats was reduced by 32% (p < 0.01) in comparison with nondiabetic (vehicle-treated) rats and 27.5% (p < 0.05) in comparison with diabetic rats treated with cilazapril. Diabetic, cilazapril-treated rats showed no reduction in NCV. For the nondiabetic, diabetic, and diabetic plus cilazapril groups fed GLA, the NCV was not significantly different, indicating that dietary GLA also prevented the deficit in the NCV induced by the diabetic state. Analysis of the sciatic nerve endoneurial phospholipid fatty acids revealed a significant reduction in the proportion of GLA and an elevation in the proportion of linoleic acid in the diabetic groups compared with the nondiabetic groups and this was independent of the cilazapril treatment or the dietary lipid supplement. Sciatic nerve myo-inositol content was unaltered while mannose, fructose, glucose, and sorbitol levels were elevated in the diabetic groups and these changes were independent of the cilazapril treatment or the dietary lipid supplement. These results indicate that in the rat, cilazapril treatment or dietary GLA, at the doses tested, are effective in preventing the deficit in the NCV induced by diabetes. SN - 1056-8727 UR - https://www.unboundmedicine.com/medline/citation/9559483/Cilazapril_and_dietary_gamma_linolenic_acid_prevent_the_deficit_in_sciatic_nerve_conduction_velocity_in_the_streptozotocin_diabetic_rat_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1056-8727(97)00072-X DB - PRIME DP - Unbound Medicine ER -